package com.mohan.gulimall.product.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

//Spring boot方式
@Configuration
@MapperScan("com.mohan.gulimall.product.dao")
public class MybatisPlusConfig {

  // 旧版
  @Bean
  public PaginationInterceptor paginationInterceptor() {
    PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
    // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
     paginationInterceptor.setOverflow(true);
    // 设置最大单页限制数量，默认 500 条，-1 不受限制
     paginationInterceptor.setLimit(1000);
    // 开启 count 的 join 优化,只针对部分 left join
    paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
    return paginationInterceptor;
  }

//  // 最新版
//  @Bean
//  public MybatisPlusInterceptor mybatisPlusInterceptor() {
//    MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
//    interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.H2));
//    return interceptor;
//  }

}
